. >> reporter: the iranians say the unmanned aerial vehicle is a scan eagle, a small drone made by a boeing subsidiary named insitu. it's only 4 feet long with a 10-foot wingspan. iranian officials say the one they display was captured by revolutionary guard anti-aircraft squad. would it take an anti-aircraft squad to bring one of these down? >> brian, that's hard to believe, because this is a very small uav. it weighs in at 40 pounds, on average. so the idea that some kind of artillery piece would blast this thing out of the sky doesn't seem believe because that would shatter it to bits. >> reporter: lee and other experts tell us the drone on display in iran could have been downed by weather or a navigation problem. a year ago, iran claimed to have shot down another u.s. drone, the high-altitude rq-170 sentinel. u.s. officials said it had crashed in the iranian desert after leaving a base in afghanistan. either way, the iranians were so pleased with the thing, that they created a toy model out of that drone. this one comes in a cool pattern in pink. on the box, the words "captured b